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This file photo taken on February 11, 2009 shows a one-day-old bottlenose dolphin swimming with its mother at Ancol water park in Jakarta.
An unusually high number of baby dolphins were found dead in the Gulf of Mexico following the 2010 Deepwater Horizon disaster, and a study April 12, 2016 blamed chronic illnesses in mothers exposed to the oil. The study probing dolphin deaths from 2010-2014 in the coastal areas of Louisiana, Mississippi and Alabama was published in the journal Diseases of Aquatic Origin. Researchers found "substantial differences between fetal and newborn dolphins found stranded inside and outside the areas affected by the 2010 Deepwater Horizon oil spill," the study said. By comparing 69 young bottlenose dolphins that washed up dead in the spill zone to 26 others found in areas unaffected by the oil, the team found that the young dolphins, which died in the womb or shortly after birth, "were significantly smaller than those that stranded during previous years and in other geographic locations."
/ AFP PHOTO / BAY ISMOYOBAY ISMOYO/AFP/Getty Images ** OUTS - ELSENT, FPG, CM - OUTS * NM, PH, VA if sourced by CT, LA or MoD **
This file photo taken on February 11, 2009 shows a one-day-old bottlenose dolphin swimming with its mother at Ancol water park in Jakarta. An unusually high number of baby dolphins were found dead in the Gulf of Mexico following the 2010 Deepwater Horizon disaster, and a study April 12, 2016 blamed chronic illnesses in mothers exposed to the oil. The study probing dolphin deaths from 2010-2014 in the coastal areas of Louisiana, Mississippi and Alabama was published in the journal Diseases of Aquatic Origin. Researchers found “substantial differences between fetal and newborn dolphins found stranded inside and outside the areas affected by the 2010 Deepwater Horizon oil spill,” the study said. By comparing 69 young bottlenose dolphins that washed up dead in the spill zone to 26 others found in areas unaffected by the oil, the team found that the young dolphins, which died in the womb or shortly after birth, “were significantly smaller than those that stranded during previous years and in other geographic locations.” / AFP PHOTO / BAY ISMOYOBAY ISMOYO/AFP/Getty Images ** OUTS – ELSENT, FPG, CM – OUTS * NM, PH, VA if sourced by CT, LA or MoD **
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Eight dolphins are dead after they became stranded Tuesday morning on a Sea Isle City beach.

Two of the dolphins had died by early Tuesday afternoon in what the Brigantine-based Marine Mammal Stranding Center called a “mass stranding event” in a social media post. The organization later euthanized the remaining six dolphins, after a veterinarian assessed that “their conditions were rapidly deteriorating.”

“The decision was made to humanely euthanize the dolphins to prevent further suffering, as returning them to the ocean would have only prolonged their inevitable death,” the MMSC said.

The dolphins have since been taken to a lab for necropsies.

“We share in the public’s sorrow for these beautiful animals, and hope that the necropsies will help us understand the reason for their stranding,” the organization said.

The dolphins were reportedly found about 11 a.m. Tuesday around the 50th Street area of the beach. Before the center’s arrival at the scene, bystanders used buckets of water to keep the beached dolphins wet. Staff from the organization, as well as a veterinarian, arrived on the beach Tuesday afternoon, the center said in a post on social media. Sea Isle City police, EMS, fire and public works departments assisted the organization.

This incident comes amid heightened concern over the deaths of nearly two dozen whales found along beaches in New Jersey and New York since December. While some environmental groups have pointed to wind turbine farm projects off the New Jersey coast as a contributing factor in the deaths, scientists and government agencies have dismissed any connections between the two, with necropsies finding evidence of ship strikes in nearly half of the whales.

In January, Gov. Phil Murphy pushed back against concerns over the wind turbine projects’ role in the deaths, saying that whale deaths had been happening at an increased rate “long before there was any offshore wind activity” in the area. Murphy was citing research from the National Oceanic and Atmospheric Administration, which has found that “no whale mortality has been attributed to offshore wind activities.”

Late last month, a dead bottlenose dolphin was found washed ashore in Avalon. MMSC staff also responded to that incident, saying that necropsy results could “take some time.”

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